def
definition
def or abbrev
SignFlipFalsifier
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formal statement (Lean)
66def SignFlipFalsifier (Tmin : ℝ) (tr : Trace) : Prop :=
proof body
Definition body.
67 ∃ tpos tneg,
68 (tr.thrust tpos).2.2 ≥ Tmin ∧
69 (tr.thrust tneg).2.2 ≤ -Tmin
70
71/-- Phase-lock falsifier (display-level):
72
73There exist two times `t1 < t2` under sustained pulsing such that the thrust
74proxy decays significantly.
75
76This encodes the *failure mode* claim (“continuous forcing degrades performance”).
77It does **not** yet encode the “pulsing restores it” part; that will require
78either richer trace fields (power/temperature) or explicit segment labels.
79-/